Don't mess with Louis Tomlinson's little sister! Lottie Tomlinson recently ripped a One Direction fan a new one when they posted something online about her brother that she didn't like. Get the scoop here!Don't mess with Louis Tomlinson's little sister!

Lottie Tomlinson recently ripped a One Direction fan a new one when they posted something online about her brother that she didn't like.

It all went down when a Larry Shipper, a fan who thinks Louis and Harry Styles are romantically involved, Instagrammed a picture of Louis and his girlfriend Eleanor Calder looking miserable while holding hands.

Along with the pic, the "fan" posted the caption, "Look @ how happy louis is and their hand holding ❤." Of course, everyone knew he was insinuating that Louis would rather be holding Harry's hand and that's why he looked so unhappy...

Louis' sis had his back and totally went off on the fanatic, an entire month after the pic was posted, by posting comments under the pic.

The fan responded to her comments not by removing the picture but by posting a picture of Lottie's comments with the caption, "BUT GUYS Lottie tomlinson commented TWICE on my pic omfg and she also blocked me...."

Ugh, really?! We're pretty sure Directioners need to move on from the whole Louis and Harry thing! Are you a Larry Shipper or do you believe in Louis' relationship with Eleanor?

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